click/focus event, to an input element.
  
        Place hidden content within the .expanding-input-content container.
      
.expanding-input on click,
        add the data-collapse="true" attribute to the <button>.
      PxExpandingInput plugin is initialized on pre-existing markup.
$('.expanding-input').pxExpandingInput();
        
require(['jquery', 'px/plugins/px-expanding-input'], function($) {
  ...
});
        You can call a public method of PxExpandingInput instance using the syntax:
$('.expanding-input').pxExpandingInput('methodName');
        | Method name | Description | 
|---|---|
| expand | Show the .expanding-input-contentelement. | 
| collapse | Hide the .expanding-input-contentelement. | 
| destroy | Destroy the PxExpandingInput instance. | 
You can subscribe on expanding input events using the syntax:
$('.expanding-input').on('event.px.expanding-input', function(e) {
  // ...
  // Preventable events can be prevented:
  // e.preventDefault();
});
        | Event | Description | 
|---|---|
| expand* | This event is fired immediately when the expand() method is called. | 
| expanded | This event is fired when the expanding input has expanded. | 
| collapse* | This event is fired immediately when the collapse() method is called. | 
| collapsed | This event is fired when the expanding input has collapsed. | 
To use PxExpandingInput plugin, you need to include the next scripts:
<script src="path/to/js/pixeladmin/plugins/px-expanding-input.js"></script>
<script src="path/to/js/pixeladmin/directives/angular-px-expanding-input.js"></script>
        Then inject the plugin into your angular application:
angular.module('yourApp', ['px-expanding-input']);Alternatively, you can include PxExpandingInput plugin using ocLazyLoad plugin:
$ocLazyLoad.load([
  {
    name: 'px-expanding-input',
    files: [
      'path/to/js/pixeladmin/plugins/px-expanding-input.js',
      'path/to/js/pixeladmin/directives/angular-px-expanding-input.js',
    ],
  },
]);
        px-expanding-input directive
        You can use px-expanding-input directive where you want.
        And when the scope is destroyed the directive will be destroyed.
      
        You can define instance attribute to get a pointer to PxExpandingInput element:
      
<px-expanding-input instance="ctrl.$expandingInput">...</px-expanding-input>
        
function SomeController() {
  // Pointer
  this.$expandingInput = null;
  // ...
  // Then, after the initialization, you can call plugin methods:
  this.$expandingInput('expand');
  this.$expandingInput('collapse');
});
        expandexpand option have an angular $watch listener applied to it.
Values:
true - show hidden content.false - hide content.
<px-expanding-input expand="ctrl.expanded">...</px-expanding-input>
        Event handlers can be bound using attributes:
<px-expanding-input on-collapse="ctrl.collapse" on-expanded="ctrl.expanded">
  ...
</px-expanding-input>
        
function SomeController() {
  this.collapse = function(e) { ... };
  this.expanded = function(e) { ... };
});